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Finding the Fourth Proportional to 105,094.40, 157,382.40 and 69,843.20

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Solution

The fourth proportional to 105,094.40, 157,382.40 and 69,843.20 is: 104,592.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,094.40 : 157,382.40 = 69,843.20 : x
  2. Step 2: Convert to fraction form
    105,094.40/157,382.40 = 69,843.20/x
  3. Step 3: Cross multiply
    105,094.40x = 157,382.40 × 69,843.20
  4. Step 4: Simplify right side
    105,094.40x = 10,992,090,439.68
  5. Step 5: Solve for x
    x = 10,992,090,439.68/105,094.40
  6. Step 6: Final answer
    x = 104,592.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.